I am trying to utilize the org.eclipse.wst.wsdl API to add an extensible attribute to a PortType. I get an UnsupportedOperationException when calling the setExtensionAttribute method call. In poking around, it looks like the org.eclipse.wst.wsdl API does throw this exception when this method is called. However, in looking at the javax.wsdl API, it defines an implementation for this method.

As far as I know, attribute extensions are allowed for PortTypes in WSDL 1.1. Why does the eclipse API not allow this?